Linux Administration: LPIC-1 Certification Practice Test

1.3/1/1

multiple alphabetic

Suppose that you have an application whose behavior depends
on the environment variable BAR. Which of the following
command lines may be used in a bash shell to configure the
application?

```
A. export $BAR=baz; echo $BAR
```
```
B. set BAR=baz
```
```
C. BAR=baz ; export BAR
```
```
D. echo $BAR=baz
```
```
E. declare -x BAR=baz
```
```
F. echo BAR=baz
```

1.3/1/2

alphabetic

Which of the following commands can be used to assure that a
file 'myfile' exists?

```
A. cp myfile /dev/null
```
```
B. touch myfile
```
```
C. create myfile
```
```
D. mkfile myfile
```

1.3/2/1

alphabetic

Which of the following command lines can be used to convert a
file containing DOS-style CR-LF line endings into Unix-style
LF line endings? Assume for this question that the DOS-style
file is called 'dosfile', and we want the modified contents
in 'unixfile'

```
A. sed 's/\r//' dosfile > unixfile
```
```
B. tr -d '\r' < dosfile > unixfile
```
```
C. dos2unix dosfile unixfile
```
```
D. strip '\r' < dosfile > unixfile
```

1.3/2/2

alphabetic

Suppose for this question that you have a file called
'wordlist' that contains a number of words, one per line.
You would like to produce an ad-hoc report that contains a
numbered list of the first five words, according to
alphabetical order. Which of the following command lines can
be used to produce this report to the console?

```
A. sort wordlist | nl | head -5
```

B. split -1 wordlist ; cat xa? | head -5

C. nl wordlist | sort | sed '/^     [^12345]/d'

```
D. nl wordlist | sort | head -5
```

1.3/2/3

alphabetic

The command 'ps -A' displays an ordered list of all running
processes, with the right-justifed process ID in the first
space-separated field. Suppose you would like to display to
screen a list of the five most recently launched processes
(those with the highest process IDs). Which of the following
commands will display the desired items?

```
A. ps -A | tail -5 | cut -f 1 -d " "
```

B. ps -A | tail -5 | sed 's/[ ]*[0-9]*//'

```
C. ps -A | head -5 | nl
```
```
D. ps -A | tac | head -5 | cut -b 0-5
```

1.3/2/4

alphabetic

Suppose that a file 'names' contains a list of names in the
form, "firstname lastname", one per line. These names are
unsorted, and you would like them sorted by lastname;
however, the format of names on each line should remain the
same. Which ONE of the following commands will NOT output an
appropriately sorted list of names to the console?

A. cut -f 2 -d " " names | paste names - | sort -k 3 | cut -f 1

```
B. sort -k 2 names
```

C. sed 's/\(\w*\) \(\w*\)/\2\1\2/' names | sort | cut -f2-3 -d" "

```
D. cut -f 2 -d " " names | sort
```

E. cut -f 2 -d " " names | paste - names | sort | cut -f 2

1.3/3/1

alphabetic

Assume that your current working directory is '/tmp'
and your home directory is '/home/jane'. Which of the below
commands will copy all the content of '/tmp/test/' to
a 'test' subdirectory of your home directory?

```
A. cp -r test/* /home/jane
```
```
B. cp -r ./test ~
```
```
C. cp -r ~/test .
```
```
D. cp -r /tmp/test /home/jane/test
```

1.3/4/1

multiple alphabetic

Suppose that you have several files matching the filename
pattern 'file[0-9]'. You would like to visually compare the
contents of all such files, in a side-by-side fashion. Which
of the following commands would let you view the desired ad
hoc report?

```
A. ls file[0-9] | xargs paste | less
```

B. paste `ls file[0-9]` > report ; vi report ; rm report

C. cat file[0-9] | paste - | more | less

D. ls file[0-9] | tee fnames | paste `cat fnames`

E. ls file[0-9] | tee fnames | xargs paste | more

F. ls *word* > fnames ; paste < xargs `cat fnames` | vi

1.3/5/1

alphabetic

Which of the following Linux utilities does NOT include the
capability to list the process IDs of running applications?

```
A. jobs
```
```
B. ps
```
```
C. nice
```
```
D. top
```

1.3/5/2

alphabetic

# jobs -l
    [1]   5110 Running                 kedit &
    [2]-  5382 Stopped (signal)        pine
    [3]+  5457 Stopped (tty output)    vi

Given the 'jobs' display in the exhibit, which command could
you use to switch display focus to the application 'vi'?

```
A. bg %3
```
```
B. fg %3
```
```
C. top -p 5457
```
```
D. switch %5457
```

1.3/5/3

alphabetic

# jobs -l
    [1]   5110 Running                 kedit &
    [2]-  5382 Stopped (signal)        pine
    [3]+  5457 Stopped (tty output)    vi

Given the 'jobs' display in the exhibit, which command could
you use to terminate the application 'vi'?

```
A. bg %3
```
```
B. kill -9 5457
```
```
C. term -i %3
```
```
D. fg 5457
```

1.3/6/1

alphabetic

Suppose you have a running program called 'myprog', that is a
child of the current shell. You would like to decrease the
CPU usage of this program. Which of the following command
lines can you use to make 'myprog' yield more CPU resources?

```
A. nice +1 myprog
```

B. ps h -o pid -C myprog | xargs nice +1 -

```
C. renice +1 -u `whoami` myprog
```

D. renice +1 -p `ps -a | grep myprog | cut -b 1-6`

1.3/7/1

alphabetic

int double(int n)
    { /* int arg, int return */
       return n*2;
    }
    char hello(int n)
    { /* int arg, char return */
       printf("hello %i\n", n);
    }
    int five()
    { /* no args, int return */
       return 5;
    }
    int        triple(int n, int other, char nonsense)
    { /* int arg, int return */
       return n*3;
    }

Correctly parsing a C source file requires a full-fledged
parser (such as that built into a C compiler). Nonetheless,
regular expressions can be used to provide a pretty good
approximate descriptions of many program constructs. Which of
the following searches will locate at least most of the C
functions that accept an int as a first argument, and return
an int (and will not produce false positives very often).
The exhibit contains a fragment of C code with several
annotated matching and non-matching functions (for non-C
programmers).

A. grep -E "int[ \t]+\w+[ \t]*\([ \t]*int" *.c

B. grep -E "^int\w+[A-Za-z_]+\w*\(\w*int" *.c

```
C. grep -E "int.+$[ \t]+int.*$ " *.c
```

D. grep -E "int[ \t]+[A-Za-z_][ \t]+\(int" *.c

1.3/7/2

alphabetic

Some tools that use regular expressions support so-called
"extended" regular expressions. For example, GNU 'grep' with
the '-E' option uses extended regular expressions. Other
tools like 'sed' only support "basic" regular expressions.
As a consequence, one must be careful in selecting the right
regular expression syntax. Which of the following characters
have a special meaning in extended regular expressions, but
not in basic regular expressions. That is, which of the
following is an extended regular expression "meta-character",
but only a regular character in basic regular expressions?

```
A. ^
```
```
B. [
```
```
C. +
```
```
D. *
```

2.4/1/1

multiple alphabetic

Based on Linux' partition naming system, which of the
following device names point to "logical" partitions
(assuming the corresponding partitions exist at all on the
system in question)?

```
A. /dev/sda3
```
```
B. /dev/fd0
```
```
C. /dev/hdb7
```
```
D. /dev/hda4
```
```
E. /dev/fd7
```
```
F. /dev/sdc11
```

2.4/1/2

alphabetic

Which of the following command lines can (possibly) be used
to format a partition? Assume required partitions exist, and
also that logical partitioning is used on each hard-disk.

```
A. mkfs -t msdos /dev/sda1
```
```
B. mkfs.ext2 /dev/null
```
```
C. mkfs -t ext2 /dev/hda4
```
```
D. mkfs --type=ext2 /dev/hdb7
```

2.4/2/1

alphabetic

Which Linux command can be used to repair improperly
shutdown, or otherwise potentially corrupt partitions?

```
A. chkdsk
```
```
B. scandisk
```
```
C. fsck
```
```
D. fdisk
```

2.4/2/2

alphabetic

Which of the following command lines will produce an ad hoc
report on the total disk space used personally by the current
user?

```
A. fsck ~
```
```
B. df ~/.
```
```
C. quota --used
```
```
D. du -hs ~
```

2.4/2/3

alphabetic

Which Linux command can be used to determine the available
space on local hard-disk partitions?

```
A. free
```
```
B. df
```
```
C. du
```
```
D. fdisk
```

2.4/3/1

alphabetic

Please examine the exhibit for this question which displays
the actual '/etc/fstab' file for the system on which this
exam was created. Which of the following lines in the file
causes a fixed and user-writeable partition to be mounted?

```
A. Line 5
```
```
B. Line 11
```
```
C. Line 9
```
```
D. Line 7
```

2.4/4/1

alphabetic

Which Linux command can be used to limit the disk space
usage allowance of a particular user? Assume for this
question that quotas are enabled for the filesystem(s) in use
on the system in question.

```
A. edquota
```
```
B. setquota
```
```
C. quotaon
```
```
D. repquota
```

2.4/5/1

alphabetic

Suppose you have created a new application 'myapp', and
copied it to the directory '/usr/local/bin'. You would like
all the users of the system to be able to run your
application. Which of the following command lines would
allow the appropriate access?

```
A. chmod o+x /usr/local/bin/myapp
```
```
B. chgrp bin /usr/local/bin/myapp
```
```
C. umask 0022 /usr/local/bin/myapp
```
```
D. chown 755 /usr/local/bin/myapp
```

2.4/5/2

alphabetic

Proper file security is particularly important for CGI
applications invoked over the web, given the diversity of
users. Which of the command lines setup reasonable file
permissions for a CGI applications? Even though particular
web servers may require slightly different configurations,
you should be able to rule out all the wrong answers below.

```
A. chmod a-x ~/www/cgi-bin/myapp.cgi
```
```
B. chmod 075 ~/www/cgi-bin/myapp.cgi
```
```
C. chmod 711 ~/www/cgi-bin/myapp.cgi
```
```
D. chmod o+w ~/www/cgi-bin/myapp.cgi
```

2.4/6/1

alphabetic

Which Linux command is used to assign privileges over a
particular file to a designated user

```
A. chroot
```
```
B. chown
```
```
C. assign
```
```
D. chgrp
```

2.4/7/1

alphabetic

One advantage of hard links over symbolic links is:

A. A hard link can span different filesystems

B. A hard link does not become disconnected from the
       underlying file if the file is moved.

C. You can determine the inode used by a hard link, but not
       for a symbolic link.

D. A hard link allows you to change the permissions on the
       underlying file.

2.4/8/1

alphabetic

According to the Linux filesystem hierarchy standard, which
of the following directories would be an appropriate location
for a user to install a shared application to?

```
A. /sbin
```
```
B. /dev/user/bin
```
```
C. /usr/local/bin
```
```
D. /etc/bin
```

2.6/1/1

alphabetic

Which of the following Linux command lines can be used to
examine kernel bootup messages after boot time?

```
A. dmesg | less
```
```
B. less /proc/kmsg
```
```
C. bootlog -v
```
```
D. vi /var/log/messages
```

2.6/1/2

alphabetic

boot=/dev/hda
    map=/boot/map
    install=/boot/boot.b
    vga=791
    default=redhat
    keytable=/boot/us.klt
    lba32
    prompt
    timeout=200
    message=/boot/message
    menu-scheme=wb:bw:wb:bw
    image=/boot/vmlinuz
            label=failsafe
            root=/dev/hda10
            initrd=/boot/initrd.img
            append=" devfs=mount failsafe"
            read-only
    image=/boot/vmlinuz-2.4.16
            label=redhat
            alias=redhat-2.4.16
            root=/dev/hda9
            read-only
    image=/boot/vmlinuz-2.4.8-26mdk
            label=mandrake81
            root=/dev/hda10
            initrd=/boot/initrd.img
            append=" devfs=mount"
            read-only
    other=/dev/hda2
            label=eComStation
            table=/dev/hda
    other=/dev/fd0
            label=floppy
            unsafe

Please examine the exhibit for this question which displays
the file '/etc/lilo.conf'. Assume that the 'lilo' command
has been run while this configuration file is as listed.
Which of the following statements correctly describes what
happens when this machine boots up?

A. The system boots after a 20 second delay, and absent user
       intervention the root filesystem is on /dev/hda10.

B. The system boots after a 20 second delay, and absent user
       intervention the root filesystem is on /dev/hda9.

C. The system boots after 2 seconds delay, and absent user
       intervention the root filesystem is on /dev/hda9.

D. The system boots after a 200 second delay, and absent user
       intervention the floppy disk is a fallback boot device.

2.6/2/1

alphabetic

Which command line can be used to restart a running Linux
system immediately?

```
A. restart --delay=0
```
```
B. reboot -w
```
```
C. halt -p
```
```
D. shutdown -r now
```

1.8/1/1

alphabetic

Suppose that you know that a task deals with the general
concept "floozflam", but you are not certain what Linux
command(s) are available for working with floozflams. Which
of the following Linux command lines would be the BEST first
step in finding out about available tools?

```
A. man floozflam
```
```
B. locate floozflam
```
```
C. apropos floozflam
```
```
D. whatis floozflam
```

1.8/1/2

alphabetic

Suppose you know that an application 'someapp' is installed
on the current system. You have already examine the man and
info pages for 'someapp', but are trying to find additional
information about 'someapp'. Which of the following
directories is the BEST first place to look for further
documentation files?

```
A. /usr/local/doc/someapp-2.37
```
```
B. /usr/share/doc/someapp-2.37
```
```
C. /etc/someapp-2.37/doc
```
```
D. /etc/doc/someapp-2.37
```

1.8/1/3

alphabetic

Which of the following Linux commands are you likely to use
to display hypertextual documentation on a command?

```
A. info
```
```
B. man
```
```
C. whatis
```
```
D. locate
```

1.8/2/1

alphabetic

Which of the following URLs is a BEST first internet site to
go to for information about how to perform an unfamiliar
Linux task?

```
A. http://www.linuxman.com/
```
```
B. http://www.linuxhowto.net/
```
```
C. http://www.linuxtoday.com/
```
```
D. http://www.linuxdoc.org/
```

1.8/3/1

alphabetic

Suppose you have created an application that you wish to
distribute to other users and system. Your application
archive already contains the necessary executables, source
code, and configuration files. But you would like to provide
user with a quick explanation of the purpose and requirements
of your application. Which of the following filenames BEST
matches users' expectations about where first to look for
application documentation

```
A. START
```
```
B. README
```
```
C. FIRST
```
```
D. MAKEFILE
```

2.11/1/1

alphabetic

Which of the following Linux commands can be used to set an
expiration date for a user's password?

```
A. chage
```
```
B. vipw
```
```
C. passwd
```
```
D. usermod
```

2.11/1/2

alphabetic

jdoe:x:502:1000:John Doe:/home/jdoe:/bin/bash

The exhibit for this question contains a line from the file
'/etc/passwd'. Which of the following statements is true,
based on the information in the exhibit?

A. User John Doe belongs to the group with groupID 502.

B. Shadow passwords are used on the current system.

C. The username 'jdoe' belongs to the group 'jdoe'.

D. Members of groupID 1000 can read directory /home/jdoe.

2.11/1/3

alphabetic

Which Linux command can be used to create a new user account?

```
A. newuser
```
```
B. useradd
```
```
C. mkuser
```
```
D. usercfg
```

2.11/1/4

multiple alphabetic

Which Linux command(s) can be used to modify the list of
groups a user belongs to?

```
A. usermod
```
```
B. groupadd
```
```
C. groups
```
```
D. gpasswd
```
```
E. chgrp
```
```
F. userinfo
```

2.11/2/1

alphabetic

Which Linux file can be used to configure the default bash
shell behavior for EVERY users on a system?

```
A. /etc/skel/.bashrc
```
```
B. /home/.bash_profile
```
```
C. /etc/profile
```
```
D. /etc/passwd
```

2.11/2/2

alphabetic

Which of the following BEST describes the purpose of the
'/etc/skel' directory?

A. The contents of the directory control the initialization of
       the shell environment during each login.

B. The contents of the directory determine the actions
       performed during the system boot process.

C. The contents of the directory provide a default
       environment for newly created users.

D. The contents of the directory list the background
       processes that run during a user's session.

2.11/3/1

alphabetic

Which of the following command lines would allow you to
examine how many times remote users have opened secure shells
into the current system?

```
A. dmesg | less
```
```
B. less /proc/kmsg
```
```
C. sshd --log | more
```
```
D. vi /var/log/messages
```

2.11/4/1

alphabetic

SHELL=/bin/bash
    PATH=/sbin:/bin:/usr/sbin:/usr/bin
    MAILTO=root
    HOME=/
    # run-parts
    01 * * * * root run-parts /etc/cron.hourly
    02 4 * * * root run-parts /etc/cron.daily
    22 4 * * 0 root run-parts /etc/cron.weekly
    42 4 1 * * root run-parts /etc/cron.monthly
    23 4 * 1,6 1 root run-parts /etc/cron.special

Refer to the '/etc/crontab' file listed in the exhibit for
this question. Which of the following statements is true?

A. The script file '/etc/cron.special is run once a week, on
       Mondays.

B. The contents of the '/etc/cron.special directory are run
       during January and June.

C. During some parts of the year '/etc/cron.special' is run
       one minute after '/etc/cron.weekly'.

D. During the month of March, '/etc/cron.special' is run on
       Mondays.

2.11/4/2

alphabetic

# cat /etc/cron.daily/slocate.cron
    #!/bin/sh
    renice +19 -p $$ >/dev/null 2>&1
    /usr/bin/updatedb -f "nfs,smbfs,ncpfs,proc,devpts" \

-e "/tmp,/var/tmp,/usr/tmp"

Based on the what the exhibit shows, which of the following
statements is the BEST assumption?

A. When cron runs updatedb, confirmations are logged to the
       root console.

B. The /etc/crontab file is configured to automatically index
       remote filesystems.

C. cron runs updatedb at a high processor priority in
       order to complete it quickly.

D. The locate database is automatically refreshed on a daily
       basis.

2.11/5/1

alphabetic

Which of the following Linux commands can be used to
create backups of filesystems and directories?

```
A. backup
```
```
B. gzip
```
```
C. tar
```
```
D. archive
```

1.1/1/1

alphabetic

Suppose that after installing a serial multi-port card on a
system, the mouse connected to a serial port on your
motherboard stops functioning. Which of the following
commands is MOST likely to be useful in diagnosing this
problem?

```
A. setserial /dev/com1 -v auto_irq
```
```
B. cat /dev/mouse > serial-info.dump
```
```
C. setserial -a /dev/cua0
```
```
D. ioaddr /dev/ttyS1
```

1.1/2/1

alphabetic

To determine what SCSI devices are attached to and recognized
on either of the two SCSI channels by the currently running
system, which command line would be BEST to run?

```
A. cat /proc/scsi/scsi
```
```
B. ls -l -i /dev/sd*
```
```
C. stinit -v /dev/sda /dev/sdb
```
```
D. scsiinfo --all --probe
```

1.1/2/2

alphabetic

Which of the following command lines would provide the most
useful information in diagnosing a suspected hardware address
conflict between an an EISA ethernet NIC card and a video controller?

```
A. cat /proc/irq
```
```
B. cat /proc/meminfo
```
```
C. cat /proc/iomem
```
```
D. cat /proc/modules
```

1.1/3/1

alphabetic

Whick of the following Linux utilities is MOST useful in
determining what sort of motherboard audio support exists on
the current system?

```
A. less -f /dev/audio
```
```
B. pnpdetect
```
```
C. modprobe
```
```
D. sndconfig
```

2.2/1/1

alphabetic

Which Linux utility would provide BEST guidance to
determining the relative performance characteristics of the
several local hard-disks installed on a system?

```
A. nfsstone
```
```
B. hdparm
```
```
C. fdisk
```
```
D. modprobe
```

2.2/2/1

multiple alphabetic

boot=/dev/hda
    map=/boot/map
    install=/boot/boot.b
    vga=791
    default=redhat
    keytable=/boot/us.klt
    lba32
    prompt
    timeout=200
    message=/boot/message
    menu-scheme=wb:bw:wb:bw
    image=/boot/vmlinuz-2.4.7-10
     label=redhat-2.4.7
     root=/dev/hda9
     read-only
    image=/boot/vmlinuz-2.4.16
        label=redhat
     alias=redhat-2.4.16
     root=/dev/hda9
     read-only
    image=/boot/vmlinuz-2.4.8-26mdk
     label=mandrake81
     root=/dev/hda10
     initrd=/boot/initrd.img
     append=" devfs=mount"
     read-only
    image=/boot/vmlinuz-2.2.15-4mdk
     label=mandrake71
     root=/dev/hda7
     read-only
    other=/dev/hda2
     label=eComStation
     table=/dev/hda
    other=/dev/fd0
     label=floppy
     unsafe

Please examine the '/etc/lilo.conf' file listed in the
exhibit. Assume for purposes of this question that this
configuration accurately matches the partitioning of the
current system, and also that 'lilo' has been run while this
configuration file is as listed. Which of the following
statements do you know to be true?

A. lilo is installed to the master boot record of the first
       IDE hard-disk.

B. lilo is installed on the partition '/dev/hda9' where there is
       a kernel image called '/boot/vmlinuz-2.4.7-10' on that
       partition.

C. Exactly three partitions on '/dev/hda' contain separate
       Linux installation.

D. The default boot kernel image is in a file named
       'vmlinuz-2.4.16'.

E. The kernel image /boot/vmlinuz-2.4.8-26mdk is stored on
       the partition '/dev/hda10'.

F. The current system contains exactly one IDE hard-disk.

2.2/3/1

mutliple alphabetic

Suppose that you have just downloaded the application
'someapp' in the form of the file
'someapp-1.3.7.src.tar.bz2'. You have placed this file in
your '~/tmp' directory. Which of the following command
lines would be a reasonable first step for installation of
the application

```
A. rpm Uvh someapp-1.3.7.src.tar.bz2
```
```
B. tar xvfj someapp-*
```

C. bunzip2 someapp-1.3.7.src.tar.bz2 | tar tvf -

```
D. cat someapp-1.3.7* | tar xvfz -
```

E. dbkg -L someapp-1.3.7.src.tar.bz2 | less

```
F. make --all someapp-1.3.7.src.tar.bz2
```

2.2/3/2

alphabetic

Which of the following commands is frequently run first when
compiling an unpacked Linux application from C source code?

```
A. rpm Uvh *
```
```
B. make install
```
```
C. setup -c
```
```
D. configure
```

2.2/4/1

alphabetic

Which of the following command lines would be MOST useful in
determining a list of the shared libraries loaded with the
application '/usr/local/bin/someapp'?

```
A. cat /etc/ld.so.conf | grep someapp
```
```
B. ldd -v /usr/local/bin/someapp
```
```
C. ldconfig -l /usr/local/bin/someapp
```
```
D. readlink /usr/local/bin/someapp
```

2.2/5/1

alphabetic

Assume you are maintaining a Debian-based Linux system.
You wish to install the application 'someapp'. Which of the
following command lines would be the most common way to
install the application?

```
A. dselect someapp
```
```
B. apt-setup someapp
```
```
C. dpkg --install someapp
```
```
D. apt-get install someapp
```

2.2/5/2

alphabetic

Assume you are maintaining a Debian-based Linux system. You
find a file on your system called '/usr/local/bin/curious',
and are unsure why the file is present. Which of the
following commands would provide you with information about
the Debian package from which the file was installed?

```
A. dpkg -s /usr/local/bin/curious
```
```
B. dpkg -L /usr/local/bin/curious
```
```
C. dpkg -S /usr/local/bin/curious
```
```
D. dpkg -l /usr/local/bin/curious
```

2.2/6/1

alphabetic

Assume you are maintaining a RPM-based Linux sysem. Which of
the following command lines would be a likely choice for
installing a precompiled distribution of the application
'someapp'

```
A. rpm -i someapp-1.3.7.src.rpm
```
```
B. rpm -Uvh someapp-1.3.7.i586.rpm
```

C. tar xvfz someapp-1.3.7.i386.tgz | rpm -qpl

```
D. rpm -Kv someapp-1.3.7.i386.rpm
```

2.2/6/2

multiple alphabetic

Assume you are maintaining a RPM-based Linux sysem. Which of
the following applications can be used (if present on your
system) for interactive management of installed packages?

```
A. dselect
```
```
B. kpackage
```
```
C. gpackage
```
```
D. xrpm
```
```
E. rpmfind
```
```
F. gnorpm
```

2.2/6/3

alphabetic

Which of the following command lines would you use to verify
that a Red Hat Package for 'someapp' that you wish to
install has not become corrupted, or been tampered with?

A. rpm -Kv someapp-1.3.7.i586.rpm | tee someapp-1.3.7.md5

B. md5sum someapp-1.3.7.i586.rpm | diff - someapp-1.3.7.md5

```
C. gpg --verify someapp-1.3.7.i586.rpm
```
```
D. checkrpm someapp-1.3.7.i586.rpm
```

1.5/1/1

multiple alphabetic

Which of the following utilities can be used to load driver
support for an additional hardware device at runtime?

```
A. modprobe
```
```
B. lsmod
```
```
C. insmod
```
```
D. chmod
```
```
E. modules
```
```
F. modinfo
```

1.5/2/1

multiple alphabetic

boot=/dev/hda
    map=/boot/map
    install=/boot/boot.b
    vga=791
    default=redhat
    keytable=/boot/us.klt
    lba32
    prompt
    timeout=200
    message=/boot/message
    menu-scheme=wb:bw:wb:bw
    image=/boot/vmlinuz-2.4.7-10
     label=redhat-2.4.7
     root=/dev/hda9
     read-only
    image=/boot/vmlinuz-2.4.16
        label=redhat
     alias=redhat-2.4.16
     root=/dev/hda9
     read-only
    image=/boot/vmlinuz-2.4.8-26mdk
     label=mandrake81
     root=/dev/hda10
     initrd=/boot/initrd.img
     append=" devfs=mount"
     read-only
    image=/boot/vmlinuz-2.2.15-4mdk
     label=mandrake71
     root=/dev/hda7
     read-only
    other=/dev/hda2
     label=eComStation
     table=/dev/hda
    other=/dev/fd0
     label=floppy
     unsafe

The exhibit for this question is one screen of the kernel
config utility at '/usr/src/linux-2.4.17/scripts/Menuconfig'.
Based on this screen which of the following statements
describe the kernel that would be created after saving the
listed options?

A. Multi-IO card drivers are contained in loadable modules
       rather than in the base kernel.

B. The compiled system supports parallel ports at a hardware
       level, but we cannot determine whether parallel printer
       support is installed.

C. IEEE 1284 (enhanced parallel) mode drivers are contained
       in loadable modules rather than in the base kernel.

D. PCMCIA management drivers are contained in loadable
       modules rather than in the base kernel.

E. Kernel support for SuperIO chipsets is included in this
       base kernel.

F. IEEE 1284 (enhanced parallel) mode drivers are compiled
       directly into this base kernel.

1.5/2/2

alphabetic

Which of the following command lines can NOT be used to
configure the compilation of a new Linux kernel and kernel
modules?

```
A. make xconfig
```
```
B. make menuconfig
```
```
C. make kernconfig
```
```
D. make config
```

1.7/1/1

alphabetic

Which of the following key sequences will save changes made
during a 'vi' editing session, and end the application?

```
A. <esc>:qw
```
```
B. <esc>:sx
```
```
C. <esc>:wq
```
```
D. <esc>:xs
```

1.7/2/1

alphabetic

Which of the following utilities can be used to terminate a
spooled print job without printing it?

```
A. lpr
```
```
B. lpc
```
```
C. lpd
```
```
D. lpq
```

1.7/3/1

multiple alphabetic

Which of the following Linux comand lines will convert a
plain text file 'file.txt' to postscript for later
(prettified) printing or viewing? Assume for this question
that any mentioned utilities are actually installed to the
system in question.

```
A. enscript -p - file.txt > file.ps
```
```
B. a2ps -o file.ps file.txt
```
```
C. text2ps < file.txt > file.ps
```
```
D. cat file.txt | lpr -P file.ps
```
```
E. ps2ascii file.ps file.txt
```

F. gs --source=file.txt --output=file.ps

1.7/4/1

alphabetic

There have been a number of print-spooling systems developed
for Linux, often offering a different range of capabilities
such as format conversions and job-control tools. Which ONE
of the following is NOT a widely used print-spooling system?

```
A. CUPS
```
```
B. GPR
```
```
C. PDQ
```
```
D. LPD
```

1.7/4/2

alphabetic

There have been a number of document-type filtering systems
developed for Linux, and working in cooperation with
print-spooling daemons. Which ONE of the following is NOT a
widely used filtering tool?

```
A. Apsfilter
```
```
B. Magicfilter
```
```
C. printfilter
```
```
D. doctype-filter
```

1.9/1/1

alphabetic

# head -2 /home/jdoe/.bashrc
    PS1='From .bashrc --* '
    export PS1
    # head -2 /home/jdoe/.bash_login
    PS1='From .bash_login --* '
    export PS1
    # head -2 .bash_profile
    PS1='From .bash_profile --* '
    export PS1
    # grep 'PS1=' /etc/bashrc
    [ "$PS1" = "\\s-\\v\\\$ " ] && PS1="[\u@\h \W]\\$ "

The exhibit for this question shows several shell
configuration files. Assume for this exercise that the PS1
environment variable is not modified elsewhere in the
(partially) displayed files, nor is it set anywhere else. If
user 'jdoe' opens a secure shell connection to this system
(named 'fury') from a remote location, what will his bash
prompt display?

```
A. From .bashrc --*
```
```
B. From .bash_login --*
```
```
C. From .bash_profile --*
```
```
D. [jdoe@fury jdoe]$
```

1.9/1/2

alphabetic

# head -2 /home/jdoe/.bashrc
    PS1='From .bashrc --* '
    export PS1
    # head -2 /home/jdoe/.bash_login
    PS1='From .bash_login --* '
    export PS1
    # head -2 .bash_profile
    PS1='From .bash_profile --* '
    export PS1
    # grep 'PS1=' /etc/bashrc
    [ "$PS1" = "\\s-\\v\\\$ " ] && PS1="[\u@\h \W]\\$ "

The exhibit for this question shows several shell
configuration files on machine 'fury'. Assume for this
exercise that the PS1 environment variable is not modified
elsewhere in the (partially) displayed files, nor is it set
anywhere else. If the root user issues a 'su jdoe' command,
what will her bash prompt display?

```
A. From .bashrc --*
```
```
B. From .bash_login --*
```
```
C. From .bash_profile --*
```
```
D. [jdoe@fury root]$
```

1.9/2/1

alphabetic

Which of the following bash command lines could be used to
"run every executable file in the current directory"?

A. for i in * ; do { case [ -x $i ] ; { ./$i; } esac } done

B. while i in * ; do { if [ -x $i ] ; then { ./$i; } fi } done

C. foreach i in * ; do { if [ -x $i ] ; then { ./$i; } done }

D. for i in * ; do { if [ -x $i ] ; then { ./$i; } fi } done

1.9/2/2

alphabetic

What special line is normally placed at the top of a custom
bash shell script?

```
A. #/usr/local/bin/bash
```
```
B. #!/bin/bash
```
```
C. #!/usr/env bash
```
```
D. #!/bash
```

2.10/1/1

multiple alphabetic

Which of the following utilities are commonly available on a
Linux system, and have the capability to detect chipset
details and installed memory on local video cards (useful
for configuring XFree86)?

```
A. XF86Config
```
```
B. SuperProbe
```
```
C. scanpci
```
```
D. XConfigurator
```
```
E. X11Setup
```
```
F. scanvideo
```

2.10/1/2

alphabetic

The file '/etc/X11XF86Config' contains configuration
information about the local X server. Where within this file
can you specify the video resolutions available when using
the Ctrl-Alt-(Plus/Minus) toggles?

A. Section "Device" / Subsection "Resolutions"

B. Section "Screen" / Subsection "Display"

```
C. Section "Monitor" /Subsection "Mode"
```

D. Section "Video" / Subsection "ModeLine"

2.10/2/1

alphabetic

Which of the following XFree86 tools is used to configure
access to remote X11 clients?

```
A. xf86config
```
```
B. xeyes
```
```
C. xaccess
```
```
D. xdm
```

2.10/3/1

alphabetic

Unfortunately, not all X11 applications are well behaved. In
particular, some applications are notorious for leaving
behind phantom processes when an X session is exited. Which
command line below might you use to make sure the application
'Xsomeapp' is terminated?

A. ps h -o pid -C Xsomeapp | xargs kill -9

```
B. kill -1 -C Xsomeapp
```
```
C. terminate `top -n Xsomeapp`
```
```
D. proc -kill Xsomeapp
```

2.10/4/1

alphabetic

Suppose that you would like to allow the current system to
act as an X client for SOME remote X servers. Also assume
that the current system is configured to recognize the alias
TRUSTED for a corresponding IP address. Which of the
following command lines would allow the machine TRUSTED to
run an X11 application that lives on the current system?

```
A. xallow -a TRUSTED
```
```
B. addremote TRUSTED
```
```
C. xhost +TRUSTED
```
```
D. Xclient --allow TRUSTED
```

2.10/4/2

alphabetic

Which of the following environment variables is used to
determine which workstation--local or remote--a launched X11
application will display on?

```
A. XTERM
```
```
A. CLIENT
```
```
A. SERVER
```
```
D. DISPLAY
```

1.12/1/1

alphabetic

RFC 1700 defines a set of standard port numbers for TCP/IP
services. Some of these ports are fairly obscure, while a
number are used on a daily basis by a Linux systems
administrator for diagnosis of network issues. Which
three services are mapped to the TCP/IP ports 80, 110 and 21
(in the listed order)?

```
A. http, telnet, ssh
```
```
B. http, pop3, ftp
```
```
C. kerberos, smtp, ftp
```
```
D. whois, telnet, pop3
```

1.12/1/2

alphabetic

Which of the following files is used to define aliases for IP
addresses, especially within a local TCP/IP network?

```
A. /etc/hosts
```
```
B. /etc/services
```
```
C. /etc/aliases
```
```
D. /etc/networks
```

1.12/3/1

alphabetic

Which of the following statements BEST describes a reason why
you would want to run a DHCP server on an internal company
LAN network?

A. To serve as a gateway between the external internet and an
       internal network, and to provide IP address translation of
       packets.

B. To filter network packets that may contain unauthorized or
       malicious contents, such as "hacker" portscans or overly
       large email attachments.

C. To allow in-company machines to access a central
       "web-services" application that is utilized in common by
       various employees.

D. To avoid confict between assigned IP addresses on various
       in-company machines, especially where machines such as
       laptops may between different ethernet hubs.

1.12/3/2

alphabetic

Which of the following TCP/IP network utilities is the BEST
tool to use to establish if a given IP address is reachable
under the current network configuration?

```
A. ping
```
```
B. finger
```
```
C. route
```
```
D. host
```

1.12/3/3

alphabetic

Which of the following TCP/IP network utilities is BEST used
to determine the hardware ethernet address of the card(s)
installed in the current machine?

```
A. netstat
```
```
B. ifconfig
```
```
C. ethers
```
```
D. arpwatch
```

1.12/3/4

alphabetic

Which of the following TCP/IP network utilities is the BEST
tool to use in identifying bottlenecks between remote
machines on the network? Specifically, assume a goal in
this debugging is to determine the paths travelled in the
forwarding of network packets, and identify intermediate
routers that may be dropping packets.

```
A. route
```
```
B. netstat
```
```
C. ping
```
```
D. traceroute
```

1.12/3/5

multiple alphabetic

Suppose that you find that your ISPs DNS service is slow or
unreliable, and you would like to configure aliases for a
few frequently targetted sites directly on the machines of
users of the company internal network you maintain. Which of
the following TCP/IP network utilities could you use to
determine the IP address assigned to symbolic domain names
(e.g. "www.somehostsite.com")?

```
A. hostname
```
```
B. whois
```
```
C. host
```
```
D. nslookup
```
```
E. netstat
```
```
F. ping
```

1.12/4/1

alphabetic

Which of the following commands is NOT a widely used Linux
utility for initiating and configuring PPP connections?

```
A. KPPP
```
```
B. WvDial
```
```
C. netconf
```
```
D. netppp
```

1.13/1/1

alphabetic

Which of the following utilities is often used in conjunction
with inetd to log and filter incoming connection requests?

```
A. tcpd
```
```
B. logwatch
```
```
C. ipfilt
```
```
D. xinetd
```

1.13/1/2

alphabetic

# description: the floozflam server handles
    #              flamflooz client connections
    service floozflam
    {
            disable         = yes
            flags           = NORETRY
            socket_type     = stream
            wait            = yes
            user            = root
            server          = /usr/sbin/in.floozflamd
            log_on_failure  += USERID
    }

The exhibit for this question shows the content of a
hypothetical '/etc/xinetd.d/floozflam' configuration file.
Assume that '/etc/xinetd.conf' includes the line
"includedir /etc/xinetd.d", and that xinetd is used on the
current system. Which of the following statements can you
deduce from the provided information?

A. The floozflam service is carried over the UDP protocol.

B. Multiple floozflam servers will be forked if multiple
       incoming requests are received.

C. The floozflam service in not activated on the current
       system.

D. If a floozflam connection fails, the IP address of the
       requesting client is logged.

1.13/2/1

alphabetic

Suppose that the 'sendmail' application is used on the
current system as a mail transport agent. What file may user
'jdoe' modify in order to cause mail sent to him to be
temporarily directed to an address outside the system's
domain?

```
A. /etc/sendmail/jdoe/forward
```
```
B. /home/jdoe/aliases
```
```
C. /etc/mail/aliases
```
```
D. /home/jdoe/.forward
```

1.13/2/2

alphabetic

Suppose that the 'sendmail' application is used on the
current system as a mail transport agent. If the file
'/etc/aliases' has been manually updated, what command needs
to be run in order to cause the changes to take effect?

```
A. sendmail -bh
```
```
B. sendmail -ba
```
```
C. sendmail -bi
```
```
D. sendmail -bp
```

1.13/3/1

alphabetic

Which of the following command lines can be used to determine
the list of modules that have been compiled into the Apache
web server?

```
A. ls /etc/httpd/modules/
```
```
B. httpd -l
```
```
C. apache --modules
```
```
D. less /etc/httpd/conf/modules.conf
```

1.13/4/1

alphabetic

Which of the following files or directories is used to
configure the local directories that are made available
remotely by an Network File System server?

```
A. /etc/fstab
```
```
B. /mnt/nfs
```
```
C. /etc/smb.conf
```
```
D. /etc/exports
```

1.13/4/2

alphabetic

Which of the following protocols/tools is MOST likely to be
used in integrating a Linux system into a Windows network,
and for accessing Windows files?

```
A. NFS
```
```
B. SAMBA
```
```
C. FTP
```
```
D. SCP
```

1.13/5/1

alphabetic

Suppose that you have configured one Linux system on an
internal LAN to run a DNS server. Which of the following
files need to be updated on each DNS client on the LAN to get
them to utilize the DNS service?

```
A. /etc/hosts
```
```
B. /etc/exports
```
```
C. /etc/resolv.conf
```
```
D. /etc/dns.conf
```

1.14/1/1

alphabetic

In performing a security audit on a Linux system, one
well-known security issue is applications that are configured
to run as root (or from other high-permission accounts) that
may be subject to call vulnerabilities such as buffer
overruns. Which of the following command lines can be used
for an initial sweep in analyzing this issue?

```
A. suid --list /*
```
```
B. chmod -R u-s ./*
```
```
C. find / -perm +4000 -user root
```
```
D. chgrp root `find / -suid`
```

1.14/1/2

alphabetic

Which of the following protocols or tools is BEST used to
batch copy files between networked machines in a manner that
protects their contents from an intruder using a packet
sniffer?

```
A. ssh/scp
```
```
B. httpd/SSL
```
```
C. gpg/snmp
```
```
D. nfs/md5sum
```

1.14/2/1

alphabetic

Which of the following Linux utilities is used to update the
user passwords stored in '/etc/passwd' to utilize the more
secure "shadow password" style.

```
A. passwd -s
```
```
B. mkshadow
```
```
C. shadowpw
```
```
D. pwconv
```

1.14/2/2

multiple alphabetic

Which of the following websites are well-known and important
resources for monitoring known security problems in Linux
distributions, and for obtaining patches and updates for
vulnerable applications and components?

```
A. http://www.securityfocus.com/
```
```
B. http://www.bugtraq.com/
```
```
C. http://www.securityupdate.net/
```
```
D. http://www.cert.org/
```
```
E. http://www.linux-bugwatch.gov/
```
```
F. http://www.linuxsecurity.com
```

1.14/3/1

alphabetic

One danger of a poorly written (or malicious) CGI application
is that it can fork overly many child processes, eventually
swamping the host system. Which of the following steps could
BEST be used to control this specific danger?

A. Include the line 'ulimit -u 512'  in the file
       /etc/profile.

B. For each CGI user, run the command 'edquota username', and
       set blocks to 2048 (or other appropriate value).

C. If a user is discovered to have an errant CGI application,
       run the command line 'ps hU username -o pid |xargs kill -9'
       to terminate their stray processes.

D. Edit the file /etc/limits to include a line similar to
       'CGI 512 2048 0 0 -' (or other appropriate values).

Linux Administration

LPIC-1 Certification Practice Test

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